JPH01275027A - Method of manufacturing heat insulating vessel - Google Patents
Method of manufacturing heat insulating vesselInfo
- Publication number
- JPH01275027A JPH01275027A JP63105073A JP10507388A JPH01275027A JP H01275027 A JPH01275027 A JP H01275027A JP 63105073 A JP63105073 A JP 63105073A JP 10507388 A JP10507388 A JP 10507388A JP H01275027 A JPH01275027 A JP H01275027A
- Authority
- JP
- Japan
- Prior art keywords
- parison
- molding
- molded body
- molded
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000465 moulding Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 22
- 239000000057 synthetic resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 22
- 238000000071 blow moulding Methods 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 abstract 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 9
- 238000009413 insulation Methods 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、断熱容器の装造方法に関し、特に、断熱性に
優れた中空の′ｇＴ熱容器を製造できる断熱容器の製造
方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing a heat insulating container, and in particular to a method for manufacturing a heat insulating container that can produce a hollow 'gT heat container with excellent heat insulation properties. be.
通常、合成樹脂製の中空容器を製造する方法としては、
ブロー成形法が知られている。ブロー成形法でシよ、押
出機から合成樹脂製チューブを押し出しく押し出された
チューブをパリソンというン、このチューブが未だ溶融
状態のうちにこれを金型間に挟み、チューブ内にエアを
吹き込んで膨らませるという手順がとられる。チューブ
は金型に押し当てられて成形されると同時に、金型によ
り冷却されて硬化することになる。Usually, the method for manufacturing hollow containers made of synthetic resin is as follows:
A blow molding method is known. In the blow molding method, a synthetic resin tube is extruded from an extruder.The extruded tube is called a parison.While the tube is still molten, it is sandwiched between molds and air is blown into the tube. The procedure is to inflate it. The tube is pressed against the mold and molded, and at the same time is cooled and hardened by the mold.
しかしながら、このような従来のブロー成形法では、押
出機によって発泡樹脂を押し出すことができないので、
非発泡の合成樹脂で形成された容器しか成形することが
できず、したがって断熱性の優れた中空容器を形成する
ことができないという問題があった。However, in such conventional blow molding methods, the foamed resin cannot be extruded using an extruder, so
There is a problem in that only containers made of non-foamed synthetic resin can be molded, and therefore hollow containers with excellent heat insulation cannot be formed.
本発明に係る断熱容器の製造方決りよ、上記の間照点を
解決するために、ブロー成形用金型の成形面に予め成形
された発泡樹脂からなる成形体をあてがう成形体挿入工
程と、押出機から押出された合成樹脂製チューブを該チ
ューブが硬化する前に成形体をあてがった金型間に挟み
、チューブ内にエアを吹き込んで膨らませることにより
成形体の内面にチューブを熱融着させて成形品を得るブ
ロー成形工程と、金型内の成形品の内側に加圧された冷
却風を送り込む冷却工程とを含むことを特徴としている
。The manufacturing method of the heat-insulating container according to the present invention includes a molded body insertion step of applying a molded body made of a pre-formed foamed resin to the molding surface of a blow molding die in order to solve the above-mentioned blind spot. Before the tube hardens, a synthetic resin tube extruded from an extruder is sandwiched between molds with a molded object applied to it, and air is blown into the tube to inflate it, thereby heat-sealing the tube to the inner surface of the molded object. The method is characterized in that it includes a blow molding step in which a molded product is obtained by molding the molded product, and a cooling step in which pressurized cooling air is sent into the inside of the molded product in the mold.
上記の構成において、金型は通常のブロー成形用金型と
同様に分割形成されたものが用いられ、成形体挿入工程
で成形体をあてがった金型間に未だ溶融状態にある合成
樹脂製チューブを挾み、チューブ内にエアを吹き込んで
これを膨らませるとフィルム状となって、このフィルム
と成形体とが熱融着し、金型内において発泡樹脂からな
る成形体とフィルムとの積層体からなる中空容器が成形
されることになる。In the above configuration, the mold is divided into parts like a normal blow molding mold, and the synthetic resin tube is still in a molten state between the molds to which the molded object is applied during the molded object insertion process. When the tube is sandwiched between the tubes and air is blown into the tube to inflate it, it becomes a film, and the film and the molded body are heat-sealed to form a laminate of the molded body made of foamed resin and the film in the mold. A hollow container consisting of the following will be formed.
ところで、通常のブロー成形法では、パリソンが金型に
押し当てられて成形されると同時に冷却されて硬化する
が、パリソンと金型の成形面との間に断熱性に優れた合
成樹脂発泡体が介在していると、パリソンを膨らませて
成形体に密着させるだけではパリソンの冷却時間が長く
かかり、製品の変形等を生じることになる。By the way, in the normal blow molding method, the parison is pressed against the mold and molded and simultaneously cooled and hardened, but synthetic resin foam with excellent heat insulation properties is used between the parison and the molding surface of the mold. If this occurs, simply inflating the parison and bringing it into close contact with the molded body will take a long time to cool the parison, resulting in deformation of the product.
本発明では、上記のブロー成形工程の終了後、合成樹脂
製チューブとしてのパリソンと発泡樹脂製の成形体との
熱融着に要する適当な時間を経過した後での冷却工程に
おける冷却風の圧力により、パリソンが成形体から浮き
上がったり、パリソン及び成形体が金型から浮き上がっ
たりするのを防止しながら、冷却風の冷気によってパリ
ソンが迅速に冷却されるので、成形品を変形させること
なく短時間のうちにパリソンを硬化させ、これにより発
泡樹脂からなる成形体と合成樹脂フィルムとの積層体か
らなる壁部構造を有する断熱性に優れた中空形状の断熱
容器を得ることができるのである。In the present invention, the pressure of the cooling air in the cooling process after the completion of the above-mentioned blow molding process and after the appropriate time required for heat fusion of the parison as a synthetic resin tube and the molded product made of foamed resin has elapsed. This prevents the parison from lifting up from the molded object, and prevents the parison and molded object from lifting up from the mold, while rapidly cooling the parison with the cold cooling air, allowing for a short time without deforming the molded object. The parison is cured in the course of time, thereby making it possible to obtain a hollow heat-insulating container with excellent heat insulation properties and having a wall structure made of a laminate of a molded body made of foamed resin and a synthetic resin film.
なお、本発明を実施する上で成形体に通気性を与えると
、成形体とパリソンとの間に気泡が発生するのを防止で
き、これによって、上記した気泡の発生に起因して製品
の強度が部分的に低下したり、容器の容量が不足したり
するのを防止できるので、高い品質の断熱容器が得られ
る。In addition, when carrying out the present invention, providing air permeability to the molded body can prevent the generation of air bubbles between the molded body and the parison, and thereby reduce the strength of the product due to the generation of the air bubbles described above. Since it is possible to prevent a partial decrease in the temperature and a shortage of container capacity, a high-quality insulated container can be obtained.
本発明の一実施例を第１図ないし第４図に基づいて説明
すれば、以下の通りである。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
金型１は分割形成されており、分割形成された金型ｌの
成形面３に対して、予め、この成形面３の形状に倣った
外周面形状を有する殻状に形成された発泡合成樹脂から
なる成形体４があてがわれる。The mold 1 is formed in sections, and a foamed synthetic resin is formed in advance into a shell shape with an outer peripheral surface shape that follows the shape of the molding surface 3 on the molding surface 3 of the divided mold 1. A molded body 4 consisting of the following is applied.
成形体４は、分割された各金型部分に対応して予め二分
割もしくはそれ以上に分割して形成されており、後述す
るブロー成形工程においてパリソン６が膨らんで形成さ
れたフィルムと熱融着されることにより密着して互いに
一体化される。The molded body 4 is formed in advance by being divided into two or more parts corresponding to each divided mold part, and is heat fused to a film formed by expanding the parison 6 in the blow molding process described later. By doing so, they are brought into close contact and integrated with each other.
上記の成形体４をなす合成樹脂材は、断熱性を有する発
泡樹脂であれば特にその材質について限定するものでは
ないが、例えば、架橋タイプの発泡ポリエチレン、発泡
ポリプロピレン、ポリエチレン−スチレン共重合体の発
泡樹脂等が用いられる。また、成形体４の成形方法につ
いても特に限定されず、例えば架橋タイプの発泡ポリエ
チレンシート、発泡ポリプロピレンシート等の発泡ポリ
オレフィン系シートを素材として、この部分成形物を組
合わせて成形したり、或いは、予備発泡された発泡性ポ
リエチレン粒子、発泡性ポリプロピレン粒子、ポリエチ
レン−スチレン共重合体の発泡性粒子などを蒸気発泡さ
せながら加熱融着させて成形したものであってもよい。The synthetic resin material forming the molded body 4 is not particularly limited as long as it is a foamed resin with heat insulating properties, but examples include cross-linked foamed polyethylene, foamed polypropylene, and polyethylene-styrene copolymer. Foamed resin or the like is used. Furthermore, the method for molding the molded body 4 is not particularly limited. For example, a foamed polyolefin sheet such as a cross-linked foamed polyethylene sheet or a foamed polypropylene sheet may be used as a material, and these partial molded products may be combined and molded. It may be formed by heating and fusing pre-foamed expandable polyethylene particles, expandable polypropylene particles, expandable particles of polyethylene-styrene copolymer, etc. while steam-foaming them.
上記成形体４の発泡倍率は特に限定しないが、例えば、
容器の断熱性等を考慮して３０倍程度の発泡倍率を有す
る成形体４が用いられる。また、成形体４として発泡樹
脂シートを用いる場合には、シートの厚さは、例えば１
５ｍｍ厚程度０ものが用いられる。Although the foaming ratio of the molded body 4 is not particularly limited, for example,
A molded body 4 having an expansion ratio of about 30 times is used in consideration of the heat insulation properties of the container and the like. Further, when using a foamed resin sheet as the molded body 4, the thickness of the sheet is, for example, 1
A material with a thickness of about 5 mm is used.
なお、上記金型１には、成形体４を金型１の成形面３に
密着させるために、成形面３に図示しない真空引き用の
吸引孔を設けて、成形体４と成形面３との間に気泡等が
生じないようにすることが望ましい。In addition, the mold 1 is provided with a vacuum suction hole (not shown) in the molding surface 3 in order to bring the molded object 4 into close contact with the molding surface 3 of the mold 1. It is desirable to prevent air bubbles from forming between the two.
また、成形体４には、後述するブロー成形工程において
合成樹脂製チューブとしてのパリソン６が膨らんで形成
されるフィルムを成形体４の内周面に対して均等に密着
させるために、通気性を付与しておくことが好ましい。In addition, the molded body 4 has air permeability in order to evenly adhere the film formed by the swelling of the parison 6 as a synthetic resin tube to the inner peripheral surface of the molded body 4 in the blow molding process described later. It is preferable to give it.
成形体４に通気性を付与する方法としては、例えば、発
泡倍率３０倍、厚さ１５Ｉｊの発泡ポリエチレンシート
からなる成形体４の場合には、刃の肉厚が０．５ｍｍ程
度のナイフを用いて、長さ１０Ｉｊ程度の図示しない切
り目を縦方向及び横方向にそれぞれ約３０ｕ＋ピツチ間
隔で形成すればよい。As a method of imparting air permeability to the molded body 4, for example, in the case of the molded body 4 made of a foamed polyethylene sheet with an expansion ratio of 30 times and a thickness of 15 Ij, a knife with a blade wall thickness of about 0.5 mm is used. Then, cuts (not shown) each having a length of about 10Ij may be formed at intervals of about 30U+pitch in both the vertical and horizontal directions.
又、成形体４を成形する金型に予め、切り目に相当する
凸部を配設しておいて、成形体４の成形と同時に切り目
を形成するようにしてもよい。このような切り目を設け
ても、目視ではこれが全く判別できないので成形品の品
質を低下させる虞れがない一方、成形体４の内部にブロ
ー圧がかかったときには内部の空気を上記の切り目から
外部へ逃がすことができる。Alternatively, a convex portion corresponding to the cut may be provided in advance on the mold for molding the molded body 4, and the cut may be formed simultaneously with the molding of the molded body 4. Even if such cuts are made, there is no risk of degrading the quality of the molded product because they cannot be visually discerned at all.However, when blow pressure is applied to the inside of the molded product 4, the air inside is forced out through the cuts. can be released to
次のブロー成形工程においては、押出機（図示せず）の
ダイアに形成された第２図に示す環状の樹脂押出ロアｂ
から、分割された成形体４同士の間に溶融状態の合成樹
脂を押し出してチューブ状のパリソン６を形成する。In the next blow molding process, an annular resin extrusion lower b shown in FIG.
Then, a molten synthetic resin is extruded between the divided molded bodies 4 to form a tubular parison 6.
そして、第３図に示すように、合成樹脂製チューブとし
てのパリソン６が１６０〜２００°Ｃで未硬化状態にお
かれている間に、予め成形体４があてがわれている金型
１同士を閉じて、パリソン６を挟んだ状態で型締めする
とともに、ダイアの中央部に設けられたエア吹出ロアａ
からパリソン６の内側に加圧エアを吹きこんで膨らませ
る。すると、加圧エアによって膨らんだパリソン６はフ
ィルム状になって、成形体４の内周面に押し付けられ成
形体４と密着して熱融着し、金型１の内部において、発
泡樹脂からなる成形体４と合成樹脂製フィルムとの積層
体からなる壁部構造の中空容器■が成形されることにな
る。As shown in FIG. 3, while the parison 6 as a synthetic resin tube is kept in an uncured state at 160 to 200°C, the molds 1 to which the molded body 4 has been applied in advance are is closed and the mold is clamped with the parison 6 sandwiched between them, and the air blowing lower a provided in the center of the diamond is closed.
Pressurized air is blown into the inside of parison 6 to inflate it. Then, the parison 6 expanded by the pressurized air becomes a film, is pressed against the inner circumferential surface of the molded body 4, and is thermally fused to the molded body 4 in close contact with the molded body 4. A hollow container (2) having a wall structure consisting of a laminate of the molded body 4 and a synthetic resin film is molded.
パリソン６をなす合成樹脂材としては、これが成形体４
と熱融着するものであれば特に限定しないが、例えば、
ポリエチレン、ポリプロピレン等のポリオレフィン系の
樹脂が用いられる。また、このようなパリソン６は、熱
融着性を高めるために、例えば、エチレン−酢酸ビニル
共重合体や、ポリエチレン−スチレン共重合体などを助
剤として添加してもよい。パリソン６の膜厚については
特に限定されないが、成形体４の寸法・形状によって異
なり、通常０．１〜１．２ｍｍ程度、好ましく−よ０．
２〜０．６龍である。As the synthetic resin material forming the parison 6, this is the molded body 4.
There is no particular limitation as long as it can be thermally fused with, for example,
Polyolefin resins such as polyethylene and polypropylene are used. In addition, such a parison 6 may contain, for example, an ethylene-vinyl acetate copolymer, a polyethylene-styrene copolymer, or the like as an auxiliary agent in order to improve heat-fusibility. The thickness of the parison 6 is not particularly limited, but varies depending on the size and shape of the molded body 4, and is usually about 0.1 to 1.2 mm, preferably -0.
It is 2 to 0.6 dragons.
ここで、前述したように成形体４に通気性を与えておく
と、パリソン６が膨らんで形成されるフィルムと成形体
４との間に介在する空気は成形体４を通過して成形体４
の外側に排出されるので、フィルムと成形体４との間に
気泡が発生することはなくなる。したがって、中空容器
■の強度が部分的に低下したり、中空容器■の容量が不
足するような事態は回避される。また、金型ｌに真空引
き用の吸引孔が形成されていると、成形体４の外側に押
し出された空気が吸引孔を通じてキャビティの外側に押
し出されるので、成形体４を確実に成形面３に押し当て
て密着させることができ、これによって成形精度を高め
ることができる。Here, if air permeability is provided to the molded body 4 as described above, the air interposed between the molded body 4 and the film formed by expanding the parison 6 will pass through the molded body 4 and
Since the air is discharged to the outside of the molded body 4, no air bubbles are generated between the film and the molded body 4. Therefore, a situation in which the strength of the hollow container (2) partially decreases or the capacity of the hollow container (2) becomes insufficient is avoided. Moreover, if a suction hole for vacuuming is formed in the mold l, the air pushed out to the outside of the molded body 4 is pushed out to the outside of the cavity through the suction hole, so that the molded body 4 can be reliably moved to the molding surface 3. The molding accuracy can be improved by pressing the molding member against the molding member.
ブロー成形工程を終えると、ブロー成形によりパリソン
６が膨らんで形成されたフィルムと成形体４とが熱融着
するのに十分な時間をおいてから冷却工程に移行される
。After the blow molding process is completed, a cooling process is started after sufficient time has elapsed for the molded body 4 to be thermally fused with the film formed by expanding the parison 6 by blow molding.
冷却工程では、第４図に示すように、例えば約４ ｋｇ
／ ｃａ程度に加圧された冷却風を中空容器Ｖの内側
に送り込む。中空容器■の内部に冷却風を送り込む方法
については特に限定しないが、例えば、加圧された冷却
風を上記エア吹出ロアａからパリソン６の内部に吹き込
む一方、中空容器■に針８を突き刺して中空容器■の内
部空間を大気中と連通させればよい。若しくは、ダイア
のエア吹込ロアａから加圧エアを吹き込み、針８を突き
刺す代わりに、エア吹込ロアａとダイアに開口した環状
形の樹脂押出ロアｂとの間に図示しないエア抜き口を形
成し、このエア抜き口を通じて中空容器■の内部空間を
大気中と連通させてもよい。In the cooling process, as shown in Fig. 4, for example, about 4 kg
Cooling air pressurized to about /ca is sent into the inside of the hollow container V. There is no particular limitation on the method of sending cooling air into the hollow container ■, but for example, pressurized cooling air is blown into the parison 6 from the air blowing lower a, while a needle 8 is pierced into the hollow container ■. The interior space of the hollow container (■) may be communicated with the atmosphere. Alternatively, instead of blowing pressurized air from the air blowing lower a of the diamond and piercing the needle 8, an air vent (not shown) may be formed between the air blowing lower a and the annular resin extrusion lower b opened in the diamond. The interior space of the hollow container (2) may be communicated with the atmosphere through this air vent.
上記の冷却工程においては、冷却風の圧力によって、パ
リソン６が膨らんで成形された後のフィルムが成形体４
から浮き上がったり、フィルム及び成形体４が金型１の
成形面３から浮き上がったりするのを防止しながら、冷
却風の冷気によってフィルムを迅速に冷却するので、成
形品を変形させることなく短時間のうちにフィルムが冷
却されて密着状態のまま硬化する。In the above cooling process, the parison 6 is swollen by the pressure of the cooling air, and the formed film is turned into a molded body 4.
The film is quickly cooled by the cold air while preventing the film and molded product 4 from rising from the molding surface 3 of the mold 1, so that the film can be quickly cooled without deforming the molded product. The film cools down and hardens while remaining in close contact.
上記の冷却工程を終えると、次に成形品取り出し工程に
移行される。この成形品取り出し工程においては、金型
１同士が開放されて、金型ｌの内部から成形品が取り出
され、ハリ取り等の後処理を経て、成形体４とフィルム
とが積層した壁体構造からなる中空容器■が得られる。After the cooling step described above is completed, the next step is to take out the molded product. In this molded product removal step, the molds 1 are opened, the molded product is taken out from inside the mold 1, and after undergoing post-processing such as deburring, the molded product 4 and the film are laminated to form a wall structure. A hollow container ■ consisting of the following is obtained.
そして、このようにして製造された中空容器Ｖは、予め
分割形成された成形体４に対してその内周面に合成樹脂
フィルムが熱融着して全体に一体化している容器構造を
なすものであり、外層壁には発泡樹脂からなる成形体４
を備えているので、優れた断熱性を発揮するとともに、
内層壁として防水性の合成樹脂フィルムが形成されるの
で、高い品質の断熱容器を得ることができる。The hollow container V manufactured in this way has a container structure in which a synthetic resin film is heat-sealed to the inner circumferential surface of the molded body 4 which has been formed separately in advance and is integrated into the whole. The outer wall has a molded body 4 made of foamed resin.
Because it is equipped with
Since a waterproof synthetic resin film is formed as the inner wall, a high-quality heat-insulating container can be obtained.
本発明に係る断熱容器の製造方法は、以上のように、ブ
ロー成形用金型の成形面に予め成形された発泡樹脂から
なる成形体をあてがう成形体挿入工程と、押出機から押
出された合成樹脂製チューブを該チューブが硬化する前
に成形体をあてがった金型間に挟み、エアを吹き込んで
膨らませるブロー成形工程と、金型内の成形品の内側に
加圧された冷却風を送り込む冷却工程とからなる構成で
ある。As described above, the method for manufacturing a heat-insulating container according to the present invention includes a molded body insertion step in which a molded body made of a pre-formed foamed resin is applied to the molding surface of a blow molding die, and A blow molding process in which a resin tube is sandwiched between molds with a molded object applied before the tube hardens, and air is blown to inflate it, and pressurized cooling air is sent inside the molded product inside the mold. The structure consists of a cooling process.
これにより、成形体挿入工程において金型にあてがわれ
た成形体に、ブロー成形工程において押出された合成樹
脂製チューブを膨らませて形成されるフィルムを成形し
なから熱融着させ、冷却工程において変形を防止しなが
ら迅速に冷却するので、短時間のうちに発泡樹脂からな
る成形体とフィルムとが積層された断熱性に優れた壁部
構造を有する中空の断熱容器を製造することができると
いった効果を奏する。As a result, a film formed by inflating the synthetic resin tube extruded in the blow molding process is heat-sealed to the molded body placed in the mold in the molded body insertion process before being molded, and then in the cooling process. Because it cools quickly while preventing deformation, it is possible to produce a hollow heat-insulating container with a wall structure with excellent heat insulation properties consisting of laminated foam resin moldings and films in a short time. be effective.
第１図ないし第４図は本発明の一実施例を示すものであ
って、第１図は成形体挿入工程を示す説明図、第２図は
ブロー成形工程内のチューブ押出し工程を示す説明図、
第３図はブロー成形工程内のブロー工程を示す説明図、
第４図は冷却工程の説明図である。
ｌは金型、３は成形面、４は成形体、６はパリソン（合
成樹脂製チューブ）、７はグイ、７ａはエア吹出口、７
ｂは樹脂押出口である。
特許出願人 東 陶 機 器株式会社同 」
二 積水化成品工業株式会社第 １ 図
か ２ 図
第３図
第４図Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being an explanatory diagram showing the molded body insertion process, and Figure 2 being an explanatory diagram showing the tube extrusion process in the blow molding process. ,
FIG. 3 is an explanatory diagram showing the blowing process in the blow molding process,
FIG. 4 is an explanatory diagram of the cooling process. 1 is a mold, 3 is a molding surface, 4 is a molded object, 6 is a parison (synthetic resin tube), 7 is a guide, 7a is an air outlet, 7
b is a resin extrusion port. Patent applicant: Totoki Co., Ltd.
2 Sekisui Plastics Co., Ltd. Figure 1 or 2 Figure 3 Figure 4
Claims (1)
脂からなる成形体をあてがう成形体挿入工程と、 押出機から押出された合成樹脂製チューブを該チューブ
が硬化する前に成形体をあてがった金型間に挟み、チュ
ーブ内にエアを吹き込んで膨らませることにより成形体
の内周面にチューブを熱融着させて成形品を得るブロー
成形工程と、 金型内の成形品の内側に加圧された冷却風を送り込む冷
却工程と、 を含むことを特徴とする断熱容器の製造方法。[Scope of Claims] 1. A molded body insertion step of applying a molded body made of a pre-formed foamed resin to the molding surface of a blow molding die, and a process of curing a synthetic resin tube extruded from an extruder. A blow molding process in which a molded product is obtained by sandwiching the molded product between the applied molds and blowing air into the tube to inflate it to heat-seal the tube to the inner peripheral surface of the molded product, and the mold. A method for producing a heat insulating container, comprising: a cooling step of sending pressurized cooling air into the inside of a molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63105073A JPH01275027A (en) | 1988-04-27 | 1988-04-27 | Method of manufacturing heat insulating vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63105073A JPH01275027A (en) | 1988-04-27 | 1988-04-27 | Method of manufacturing heat insulating vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01275027A true JPH01275027A (en) | 1989-11-02 |
Family
ID=14397767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63105073A Pending JPH01275027A (en) | 1988-04-27 | 1988-04-27 | Method of manufacturing heat insulating vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01275027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372419U (en) * | 1989-11-17 | 1991-07-22 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5569423A (en) * | 1978-11-20 | 1980-05-26 | Yoshikazu Nakajima | Production of hollow molding having thermal insulator on surface |
| JPS57140127A (en) * | 1981-02-25 | 1982-08-30 | Dainippon Ink & Chem Inc | Formation of hollow vessel |
| JPS6392431A (en) * | 1986-10-08 | 1988-04-22 | Kyoraku Co Ltd | Manufacture of molding with skin |
-
1988
- 1988-04-27 JP JP63105073A patent/JPH01275027A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5569423A (en) * | 1978-11-20 | 1980-05-26 | Yoshikazu Nakajima | Production of hollow molding having thermal insulator on surface |
| JPS57140127A (en) * | 1981-02-25 | 1982-08-30 | Dainippon Ink & Chem Inc | Formation of hollow vessel |
| JPS6392431A (en) * | 1986-10-08 | 1988-04-22 | Kyoraku Co Ltd | Manufacture of molding with skin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372419U (en) * | 1989-11-17 | 1991-07-22 |
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